EP 0592725 A1 19940420 - Transfer method, frame information extraction circuit and clock pulse stream regenerator used therein.
Title (en)
Transfer method, frame information extraction circuit and clock pulse stream regenerator used therein.
Title (de)
Übertragungsverfahren, Schaltung zur Gewinnung von Rahmeninformation und darin verwendeter Taktimpulsregenerator.
Title (fr)
Procédé de transfert, circuit d'extraction d'information de trame régénerateur d'impulsions d'horloge appliqués dans ce procédé.
Publication
Application
Priority
EP 92202871 A 19920918
Abstract (en)
A method for transferring a clock pulse stream and frame information over a single interconnection cable, from a transmitter to a receiver (CKR, FRR) of a telecommunication system. The modulation comprises the omission at the frame information pulse rate of pulses from the clock pulse stream. A frame information extraction circuit (CKR, FRR) which includes: means (CLR) to regenerate the clock pulse stream (R155M) from the received modulated clock pulse stream (I155M); means (FF1/2) to decrease the clock pulse rate and the modulated clock pulse rate by two, thereby respectively generating a modified clock pulse stream (R75M) and a modified modulated clock pulse stream (I75M, D75M); and sampling means (FF3) to sample the modified modulated clock pulse stream at the modified clock pulse rate, thereby generating an output pulse stream (QFF3) whose pulse transitions are indicative of the frame information. A clock pulse stream regenerator (CLR) which includes a pulse recovering circuit (M5-7, L, C, M10/11) having two branches (M10/M5; M11/M6) each including the series connection of a current source (M10; M11) and a switch (M5; M6). The branches are connected to a common second current source (M7) and the switches are differentially controlled by the modulated clock pulse stream (+/-I155M). The junction points of the current source and the switch of each branch are interconnected by an L-C tank filter (L, C) and constitute differential outputs at which a regenerated clock pulse stream (R155M) without missing pulses is obtained. <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
H03K 5/19 (2006.01); H04J 3/06 (2006.01); H04L 7/027 (2006.01)
CPC (source: EP)
H03K 5/19 (2013.01); H04J 3/0614 (2013.01); H04L 7/027 (2013.01)
Citation (search report)
- [X] EP 0419895 A2 19910403 - SIEMENS AG [DE]
- [X] PATENT ABSTRACTS OF JAPAN vol. 012, no. 351 (E-660)20 September 1988 & JP-A-63 107 246 ( HITACHI )
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 92202871 A 19920918